https://doi.org/10.1051/epjconf/202430103003
Photon-photon scattering
ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicki 835, 25241 Dolni Břežany, Czech Republic.
Centro Internacional de Ciencias, A.C. Campus UNAM-UAEM, Avenida Universidad 1001, 62100 Cuernavaca, Morelos, Mexico.
After May 15, 2023: Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio C-3, Apdo. Postal 2-82, C.P. 58040, Morelia, Michoacán, Mexico.
* E-mail: christianschubert137@gmail.com
Published online: 7 August 2024
The existence of photon-photon scattering historically was one of the first non-trivial predictions of QED. However, since the cross section is very small at low energies it was only in 2017 that a direct measurement was achieved in heavy-ion collisions at the LHC. After short reviews of the history of the subject and of the CERN experiment, I discuss the general structure of the four-photon tensor, which also serves as the prototype for all vertices of four gauge bosons. I then come to generalizations from QED to the Standard Model and beyond, in particular to the Born-Infeld theory that has gained some popularity in recent years as an alternative to standard quantum electrodynamics.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
